sithelephant
sithelephant t1_isxb5o7 wrote
Reply to comment by SpaceInMyBrain in First known map of night sky found hidden in Medieval parchment by TechnologicalDarkage
Guilds are another problem.
The reason for not preserving many of the techniques was not lack of printing, but intentional control of knowledge to the degree it was often lost going from master->apprentice->Oh, he got hit by a cart.
sithelephant t1_isxb9ty wrote
Reply to comment by balkibartokamis in First known map of night sky found hidden in Medieval parchment by TechnologicalDarkage
Expensive, but easy to find.